A doctor and his friend were arrested while two juveniles were detained in connection with the acid attack on a 30-year old woman doctor here, police said Thursday.
 
 Arvind Yadav, a batch mate of the victim, along with his friend Vaibhav hatched the plan to throw acid on Amrita Kaur, police said.
 
 Police said Amrita had turned town Yadav's marriage proposal and got engaged to another man eight months ago.
 
 Amrita Kaur, the doctor employed with an Employees State Insurance (ESI) hospital in the national capital, suffered burn injuries after two motorcycle-borne assailants hurled acid at her Tuesday morning at a crowded market in west Delhi's Rajouri Garden area.
 
 Both the accused were arrested Wednesday. They had hired two minors to throw acid on the woman doctor. Both the juveniles have been detained.